单项选择题
The scrap value of abnormal loss (or abnormal gain) is ...
判断题The scrap value of abnormal loss (or abnormal gain) is recorded in an abnormal loss (abnormal gain) account.
A、-80 B、80 C、-10 D、10
单项选择题 A、-80 B、80 C、-10 D、10
置信度定的愈大,则置信区间相应( )A.愈小 B.愈大 C.不变 D.没影响
单项选择题置信度定的愈大,则置信区间相应( )